Kernel-4.18.0-80.el8_arm,sp804

ARM sp804 Dual Timers

Required properties:

  • compatible: Should be “arm,sp804” & “arm,primecell”
  • interrupts: Should contain the list of Dual Timer interrupts. This is the
    interrupt for timer 1 and timer 2. In the case of a single entry, it is
    the combined interrupt or if “arm,sp804-has-irq” is present that
    specifies which timer interrupt is connected.
  • reg: Should contain location and length for dual timer register.
  • clocks: clocks driving the dual timer hardware. This list should be 1 or 3
    clocks. With 3 clocks, the order is timer0 clock, timer1 clock,
    apb_pclk. A single clock can also be specified if the same clock is
    used for all clock inputs.

Optional properties:

  • arm,sp804-has-irq = <#>: In the case of only 1 timer irq line connected, this
    specifies if the irq connection is for timer 1 or timer 2. A value of 1
    or 2 should be used.

Example:

timer0: timer@fc800000 {
    compatible = "arm,sp804", "arm,primecell";
    reg = <0xfc800000 0x1000>;
    interrupts = <0 0 4>, <0 1 4>;
    clocks = <&timclk1 &timclk2 &pclk>;
    clock-names = "timer1", "timer2", "apb_pclk";
};